The role of small bettors in price formation in betting exchanges

Isabel Abinzano, Luis Muga and Rafael Santamaria

Applied Economics, 2020, vol. 52, issue 33, 3637-3650

Abstract: The presence of small bettors in betting exchanges generates mispricing, which can lead to exploitation by informed traders or result in permanent price deviations. This paper shows that mispricing from this source is also dependent upon variables of established relevance such as tournament round, the level of attention to the event, the volume of the betting, and bet type, further confirming these findings by means of cumulative accuracy profile (CAP) curves. It also offers evidence of the relevant role played by the type of device used to place the bet, whereby higher mispricing is observed in live bets placed via a mobile device, which appears to be associated with impulsive betting. This last finding could have practical implications for the regulation of the use of mobile devices to access gambling platforms.

Date: 2020
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DOI: 10.1080/00036846.2020.1717427

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